Fig 5. Bloch Simulation comparison of three dual-band refocusing pulses.

For the three pulses shown (Fourier pulse, SLR pulse, or Wavelet pulse), Bloch simulation comprised a dual-band excitation pulse followed by one of the three dual-band refocusing pulses plotted in the top panel with 50 spin isochromats and an echo time of 72 ms to simulate a crushed spin echo response. The second panel compares the transverse magnetization magnitude zoomed to each of the two pass bands. The SLR and wavelet pulse exhibit a very similar profile. The bottom panel plots the phase angle in radians of the transverse magnetization for each pulse.